ownership of the brigade is passed in the ap_pass_brigade call

so make sure that it doesn't get left lying around. This tickled
a bug with mod_deflate and resulted in a bucket being compressed
more than once.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93610 13f79535-47bb-0310-9956-ffa450edef68